it's not unique to nature. You're in heat, you want to mate with anything that looks attractive. What's attractive will vary immensely based on societal and personal experience, for reasons we still cannot fully understand as the human mind is still a huge secret to unlock. It's not perfect in the same way that few parts of nature are perfectly optimized. Remants of old patterns or general heuristics on "what is good enough" will remain and they can persist for very long times.

The only unique-ish thing about humans is that we have no "mating period". We are continuously in heat compared to most of nature, so that urge remains around consistently. Virtually every form of society has evolved some sort of culture to control these urges (as well as ways to control sexual conflict, which is another topic entirely) in order to advance as a civilization otherwise it'd be non-stop mating